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Finding the Fourth Proportional to 755.95, 1,043.27 and 424.45

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Solution

The fourth proportional to 755.95, 1,043.27 and 424.45 is: 585.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.95 : 1,043.27 = 424.45 : x
  2. Step 2: Convert to fraction form
    755.95/1,043.27 = 424.45/x
  3. Step 3: Cross multiply
    755.95x = 1,043.27 × 424.45
  4. Step 4: Simplify right side
    755.95x = 442,815.95
  5. Step 5: Solve for x
    x = 442,815.95/755.95
  6. Step 6: Final answer
    x = 585.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.